You should have come to this Parenting Advice page from my About Me page.
None of this advice is original with me. I'd like to thank Jud and Linda Sasser—whom I've lost track of over the years—for being the first to provide an example of excellent children and the first to give me advice.
Advice for teenagers came from watching Gideon and Faith Dickerson and Teshuvah and Mercy Hartle, whose children have grown up to be excellent and reliable servants of God.
In this case, I didn't ask. It didn't dawn on me it might be different than for smaller children until my oldest was close to his teen years. I had friends with wonderful teenagers, so I took note of what they did. This one's real short.
If you did well with your pre-teen, you'll be able to reason with them like you would an adult when they're teenagers. You have to let them do some exploring and learning on their own.
(Don't take that too far. I've seen teenagers that, one, needed some lack of discipline as pre-teens made up for, and two, who got into bad situations and bad influences and needed firm guidance to get back.)